Component

Selenoprotein biosynthesis

Formation of proteins containing genetically encoded selenocysteine.

4 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What acts on it

  1. Vesicle acidification was required for efficient selenium utilization from SELENOP.

    SELENOP-containing vesicle acidification → Selenoprotein biosynthesis source_derived_draftliterature_reviewed:direct_experimental
    Experimental context and source evidence
    cell_type
    Jurkat and RD
    experimental_model
    Acidification inhibition
    limitations
    Chemical recovery steps are incompletely resolved.
    organism
    human

    Selenium: literature corrections and mechanism additions · lines 558–568

    Metabolic Ledger literature curation, 17 September 2026; primary papers linked individually · supports · Acidification inhibition · secondary_verified · secondary_verified

    ## acidified-vesicles-enable-selenop-use Cells processed SELENOP in acidified compartments. Vesicle acidification was required for efficient selenium utilization from SELENOP. Organism: human Cell type: Jurkat and RD Experimental model: Acidification inhibition Limitations: Chemical recovery steps are incompletely resolved. Primary reference: [An efficient selenium transport pathway of selenoprotein P utilizing a high-affinity ApoER2 receptor variant and being independent of selenocysteine lyase](https://pubmed.ncbi.nlm.nih.gov/37406814/)
    Complete structured claim and evidence

  2. Jurkat cells retained efficient SELENOP utilization without SCLY.

    SCLY → Selenoprotein biosynthesis source_derived_draftliterature_reviewed:direct_experimental
    Experimental context and source evidence
    cell_type
    Jurkat
    experimental_model
    SCLY disruption
    limitations
    Alternative recovery chemistry is unresolved.
    organism
    human

    Selenium: literature corrections and mechanism additions · lines 582–592

    Metabolic Ledger literature curation, 17 September 2026; primary papers linked individually · supports · SCLY disruption · secondary_verified · secondary_verified

    ## jurkat-selenop-use-persists-without-scly This cell line used a SCLY-independent recovery route. Jurkat cells retained efficient SELENOP utilization without SCLY. Organism: human Cell type: Jurkat Experimental model: SCLY disruption Limitations: Alternative recovery chemistry is unresolved. Primary reference: [An efficient selenium transport pathway of selenoprotein P utilizing a high-affinity ApoER2 receptor variant and being independent of selenocysteine lyase](https://pubmed.ncbi.nlm.nih.gov/37406814/)
    Complete structured claim and evidence

  3. RD cells used a lysosomal SELENOP recovery route dependent on SCLY.

    SCLY → Selenoprotein biosynthesis source_derived_draftliterature_reviewed:direct_experimental
    Experimental context and source evidence
    cell_type
    RD rhabdomyosarcoma
    experimental_model
    Perturbation assays
    limitations
    Dependency does not locate SCLY catalysis inside lysosomes.
    organism
    human

    Selenium: literature corrections and mechanism additions · lines 570–580

    Metabolic Ledger literature curation, 17 September 2026; primary papers linked individually · supports · Perturbation assays · secondary_verified · secondary_verified

    ## rd-lysosomal-selenop-recovery-requires-scly These rhabdomyosarcoma cells required SCLY for SELENOP selenium recovery. RD cells used a lysosomal SELENOP recovery route dependent on SCLY. Organism: human Cell type: RD rhabdomyosarcoma Experimental model: Perturbation assays Limitations: Dependency does not locate SCLY catalysis inside lysosomes. Primary reference: [An efficient selenium transport pathway of selenoprotein P utilizing a high-affinity ApoER2 receptor variant and being independent of selenocysteine lyase](https://pubmed.ncbi.nlm.nih.gov/37406814/)
    Complete structured claim and evidence

  4. SCLY knockdown reduced incorporation of SELENOP-derived selenium into newly synthesized selenoproteins in HeLa cells.

    SCLY → Selenoprotein biosynthesis source_derived_draftliterature_reviewed:direct_experimental
    Experimental context and source evidence
    cell_type
    HeLa
    experimental_model
    75Se-labeled SELENOP and RNA interference
    limitations
    Cell-specific dependency; not a universal uptake sequence.
    organism
    human

    Selenium: literature corrections and mechanism additions · lines 534–544

    Metabolic Ledger literature curation, 17 September 2026; primary papers linked individually · supports · 75Se-labeled SELENOP and RNA interference · secondary_verified · secondary_verified

    ## scly-supports-selenop-selenium-reuse These cells needed SCLY for efficient selenium reuse. SCLY knockdown reduced incorporation of SELENOP-derived selenium into newly synthesized selenoproteins in HeLa cells. Organism: human Cell type: HeLa Experimental model: 75Se-labeled SELENOP and RNA interference Limitations: Cell-specific dependency; not a universal uptake sequence. Primary reference: [Mammalian Selenocysteine Lyase Is Involved in Selenoprotein Biosynthesis](https://www.jstage.jst.go.jp/article/jnsv/57/4/57_4_298/_article/-char/en)
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards